Pressure Ratio in IC Engine Formulas

Pressure ratio is the ratio of the maximum pressure during combustion to the minimum pressure at the end of exhaust, reflecting compression and expansion characteristics of the engine cycle. And is denoted by r_p.

IC Engine formulas that make use of Pressure Ratio

fxMean Effective Pressure in Otto CycleGo

fxWork Output for Otto CycleGo

fxWork Output for Dual CycleGo

fxThermal Efficiency of Lenoir CycleGo

FAQ

What is the Pressure Ratio?

Pressure ratio is the ratio of the maximum pressure during combustion to the minimum pressure at the end of exhaust, reflecting compression and expansion characteristics of the engine cycle.

Can the Pressure Ratio be negative?

{YesorNo}, the Pressure Ratio, measured in {OutputVariableMeasurementName} {CanorCannot} be negative.

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